Chemical Bonding and Molecular Structure

Amongst the following, the number of oxide(s) which are paramagnetic in nature is

$\mathrm{Na_2O}$, $\mathrm{KO_2}$, $\mathrm{NO_2}$, $\mathrm{N_2O}$, $\mathrm{ClO_2}$, NO, $\mathrm{SO_2}$, $\mathrm{Cl_2O}$

According to MO theory, number of species/ions from the following having identical bond order is ______.

$\mathrm{CN^-}$, $\mathrm{NO^+}$, $\mathrm{O_2}$, $\mathrm{O_2^+}$, $\mathrm{O_2^{2+}}$

Match List - I with List - II.

Choose the correct answer from the options given below :

The number of molecule(s) or ion(s) from the following having non-planar structure is ______.

$\mathrm{NO_3^-}$, $\mathrm{H_2O_2}$, $\mathrm{BF_3}$, $\mathrm{PCl_3}$, $\mathrm{XeF_4}$, $\mathrm{SF_4}$, $\mathrm{XeO_3}$, $\mathrm{PH_4^+}$, $\mathrm{SO_3}$, $\mathrm{[Al(OH)_4]^-}$

The number of paramagnetic species among the following is ______.

$\mathrm{B_2}$, $\mathrm{Li_2}$, $\mathrm{C_2}$, $\mathrm{C_2^-}$, $\mathrm{O_2^{2-}}$, $\mathrm{O_2^+}$ and $\mathrm{He_2^+}$

The number of interhalogens from the following having square pyramidal structure is :

$\mathrm{ClF_3}$, $\mathrm{IF_7}$, $\mathrm{BrF_5}$, $\mathrm{BrF_3}$, $\mathrm{I_2Cl_6}$, $\mathrm{IF_5}$, ClF, $\mathrm{ClF_5}$

Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R

Assertion A : Zero orbital overlap is an out of phase overlap.

Reason R : It results due to different orientation / direction of approach of orbitals.

In the light of the above statements, choose the correct answer from the options given below

Which of the following pair of molecules contain odd electron molecule and an expanded octet molecule ?

Number of lone pairs of electrons in the central atom of $\mathrm{SCl_2}$, $\mathrm{O_3}$, $\mathrm{ClF_3}$ and $\mathrm{SF_6}$, respectively, are :

Which among the following pairs of the structures will give different products on ozonolysis ? (Consider the double bonds in the structures are rigid and not delocalized.)

Consider, PF$_5$, BrF$_5$, PCl$_3$, SF$_6$, [ICl$_4$]$^-$, ClF$_3$ and IF$_5$.

Amongst the above molecule(s)/ion(s), the number of molecule(s)/ion(s) having sp$^3$d$^2$ hybridisation is _______.

The correct option for relative covalent nature of compounds is

On the basis of MO. theory, the number of molecules from the following which have bond order two, is _______.

O$_2$, O$_2^+$, N$_2^{2-}$, C$_2$, B$_2$

Consider the molecules / ions given below

XeO$_3$, BF$_4^-$, I$_3^-$, SF$_6$, PCl$_5$

The ratio of number of molecules having sp$^3$d hybridisation to those having sp$^3$ hybridisation is _______

Among the following, the conformation that corresponds to the most stable conformation of meso-butane-2,3-diol is

In the reaction given below, the total number of atoms having $sp^2$ hybridization in the major product $\mathbf P$ is ____.

Which of the following are isostructural pairs ?

A. $\mathrm{SO_4^{2-}}$ and $\mathrm{CrO_4^{2-}}$
B. $\mathrm{SiCl_4}$ and $\mathrm{TiCl_4}$
C. $\mathrm{NH_3}$ and $\mathrm{NO_3^-}$
D. $\mathrm{BCl_3}$ and $\mathrm{BrCl_3}$

With respect to hypochlorite, chlorate and perchlorate ions, choose the correct statement(s).

Consider the following compounds in the liquid form:

$\ce{O2}$, $\ce{HF}$, $\ce{H2O}$, $\ce{NH3}$, $\ce{H2O2}$, $\ce{CCl4}$, $\ce{CHCl3}$, $\ce{C6H6}$, $\ce{C6H5Cl}$.

When a charged comb is brought near their flowing stream, how many of them show deflection as per the following figure?

An acidified solution of potassium chromate was layered with an equal volume of amyl alcohol. When it was shaken after the addition of 1 mL of 3% $\ce{H2O2}$, a blue alcohol layer was obtained. The blue color is due to the formation of a chromium (VI) compound 'X'. What is the number of oxygen atoms bonded to chromium through only single bonds in a molecule of X?